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Class Information
Number: 348/607
Name: Television > Image signal processing circuitry specific to television > Noise or undesired signal reduction
Description: Subject matter including specific circuitry for the elimination of unwanted signals generated in the system, or by the transmission medium.










Sub-classes under this class:

Class Number Class Name Patents
348/615 Blackspot or shading correction (e.g., corrects for fixed pattern defects) 124
348/616 Dropout compensator (e.g., replacement type) 147
348/624 For color television 170
348/618 For removal of low amplitude random noise (e.g., variable bandwidth) 110
348/614 Ghost elimination (e.g., multipath) 335
348/608 Processing at encoder or transmitter (e.g., pre-correction) 156


Patents under this class:
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Patent Number Title Of Patent Date Issued
5974192 System and method for matching blocks in a sequence of images Oct. 26, 1999
5969777 Noise reduction apparatus Oct. 19, 1999
5970180 Adaptive filter device and related method Oct. 19, 1999
5963271 Image processing apparatus and method with aperture correction Oct. 5, 1999
5959692 Television-signal processing apparatus and television-signal processing Sep. 28, 1999
5956095 Noise suppression apparatus Sep. 21, 1999
5956096 Stress mitigating method for video display terminal Sep. 21, 1999
5949916 Modified automatic regressive filter and filtering method therefor Sep. 7, 1999
5936675 Method and architecture for reducing flickers using one FIFO video line buffer in video signal conversions Aug. 10, 1999
5936682 Circuit for enhancing chrominance transitions in real-time video reception Aug. 10, 1999
5933460 Phase detecting method and phase tracking loop circuit for a digital vestigial sideband modulation communication device Aug. 3, 1999
5929935 Method for reducing flicker and circuit therefor Jul. 27, 1999
5929936 System for reducing noise in image data through recursive operation Jul. 27, 1999
5930402 Method and device for local contrast enhancement of video signal Jul. 27, 1999
5923378 Using intercarrier signals for detecting NTSC interference in digital TV receivers Jul. 13, 1999
5920356 Coding parameter adaptive transform artifact reduction process Jul. 6, 1999
5912932 Apparatus and methods for decoding a communication signal Jun. 15, 1999
5909253 Reducing video crosstalk in a data carrier located within a vestigial sideband of a standard television signal Jun. 1, 1999
5907370 Apparatus and method for reducing qauntization error in digital image signals May. 25, 1999
5903319 Method for eliminating temporal and spacial distortion from interlaced video signals May. 11, 1999
5903680 Image data recursive noise filter with reduced temporal filtering of higher spatial frequencies May. 11, 1999
5892549 Method and apparatus for compressing a digital signal using vector quantization Apr. 6, 1999
5892853 Methods, apparatus and program storage device for removing scratch or wire noise, and recording media therefor Apr. 6, 1999
5886751 Method of eliminating interference signals from video signals Mar. 23, 1999
5880791 Method and apparatus for filtering data in which the required storage capacity is reduced Mar. 9, 1999
5875001 HDTV receiver Feb. 23, 1999
5867228 Video signal noise reduction apparatus with variable S/N improving amount Feb. 2, 1999
5864373 Video signal detection circuit and video signal processing device Jan. 26, 1999
5852475 Transform artifact reduction process Dec. 22, 1998
5850257 Noise reduction device employing a sample and hold circuit, and an image pickup device using the noise reduction device Dec. 15, 1998
5844627 Structure and method for reducing spatial noise Dec. 1, 1998
5841478 Code sequence detection in a trellis decoder Nov. 24, 1998
5841484 Blind equalizer method and apparatus for HDTY transmission using an NTSC rejection filter for mitigating co-channel interference Nov. 24, 1998
5835131 Digital television receiver with adaptive filter circuitry for suppressing NTSC co-channel interference Nov. 10, 1998
5828404 VSB mode detection system with comb filter Oct. 27, 1998
5828422 Ghost canceler Oct. 27, 1998
5825428 Apparatus and method for reducing noise when changing the aspect ratios of displayed digital video signals Oct. 20, 1998
5818517 Broadband interference reduction Oct. 6, 1998
5812217 Automatically adjusting anti-ghosting filter coefficients when the coefficients exceed particular values Sep. 22, 1998
5801759 Digital TV receiver circuitry for detecting and suppressing NTSC co-channel interference Sep. 1, 1998
5801790 Using video signals from auxiliary analog TV receivers for detecting NTSC interference in digital TV receivers Sep. 1, 1998
5798803 NTSC interference detectors using comb filters that suppress HDTV pilot carrier for NTSC extraction Aug. 25, 1998
5796438 Methods and apparatus for interpolating picture information Aug. 18, 1998
5796445 Stress mitigating method for video display terminal Aug. 18, 1998
5796786 Phase error detecting method and phase tracking loop circuit Aug. 18, 1998
5786870 NTSC video signal receivers with reduced sensitivity to interference from co-channel digital television signals Jul. 28, 1998
5777692 Receiver based methods and devices for combating co-channel NTSC interference in digital transmission Jul. 7, 1998
5777698 Apparatus for reducing moire interference in color cathode ray tubes Jul. 7, 1998
5764307 Method and apparatus for spatially adaptive filtering for video encoding Jun. 9, 1998
5757861 Apparatus for correcting phase error of VSB signal May. 26, 1998

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